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What's wrong with my UPS?

post #1 of 5
Thread Starter 
So I recently picked up an APC Smart UPS, model DLA2200RM2U. FYI, DLA2200RM2U is almost the same as SUA2200RM2U, just Dell branded.

The guy said the batteries were replaced about two years ago. I have a server hooked up to it, and the server will power on. However, when I run a power test, the server dies and the UPS flashes the light that says the batteries are bad. Before this, the batteries showed full charge, and it shows the same in the software too.

I verified that all batteries were connected securely, and the internal fuse is still good. Is this the behavior of a UPS when the batteries are dead, or is something else going on?
post #2 of 5
Sounds like dead/aged batteries to me.

We have a lot of UPS that do this at our remote sites. After 2 or 3 years they have a pretty good chance of being shot.
post #3 of 5
Thread Starter 
Quote:
Originally Posted by beers View Post

Sounds like dead/aged batteries to me.

We have a lot of UPS that do this at our remote sites. After 2 or 3 years they have a pretty good chance of being shot.

That's my thought, but I thought the behavior was odd. Shouldn't the software or the lights on the front indicate something is wrong before the cut over?
post #4 of 5
Not necessarily. I see a lot of APC SmartUPS units that are green across the board and then last about 16 milliseconds once the AC is cut. You can't rely on the lights; you have to replace the batteries on a schedule. It could be very frequent if the local utility feed is dirty.

Also, don't wear nice pants when you're swapping the batteries. I've ruined many a trouser that way.
    
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2x intel Xeon E5-2650 Supermicro MBD-X9DR3-F-O Onboard awesomeness 8 x 8GB Kingston DDR3 1333 ECC 
Hard DriveCoolingOSMonitor
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Corsair AX1200 Case Labs TX10-D 
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post #5 of 5
@tycoonbob

Sometimes with batteries (depending on the technology) the voltage can be high enough to indicate that everything is fine, but the capacity is basically zero. Those lights are probably dependent on a voltage reading, since to measure available capacity you actually have to discharge the battery and measure the discharge.
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Mythica
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